Electric switch.



B3 11. RIEKEN.

ELECTRIC SWITCH.

rum-non nun) 11.2, 1913.

B manna-sum 1.

STA-RT ig, I, v

Patefited' June 24, 1913.

E. H. RIEKEN.

ELECTRIC SWITCH.

APPLICATION FILED JAN. 2, 1913.

Patented June 24, 1913.

2 SHEETS'SHEET 2.

Zimwml'n oisirsn senses rerrssr ostrich.

ERNEST H. RIEKEN, OF CHICAGO, ILLINOIS.

ELECTRIC SVJITCH.

.i New.

To all whom may concern Be it known that I, ERNEST H. RIEKEN, a citizen of the United'States, residing, at Chicago. in the county of Cook and State of Illinois, have invented a new and useful Improvement in Electric Switches, of which the following is a specification.

'My invention relates to switches used for principally, in connection with induction motors, where it is necessary to use one section orthrow of the sw tch for starting the motor and the other section or throw'of the switch for the'continued running of the motor;

My switch is so designed that it can not be thrown. from the open Position sition, nor can it be left. on the starting position wit-ln'mt being held bvthe operator.

It is also so designed so that all springs I which are employed to keep current carry- I ing parts in contact can not be permanently bent out o place; thus assuring an inn varying p zssnr-e on these contactparts. I attain these objects by the' construction shown in the accompanying drawings in which: I

Figure -l is a vertical cross section through the switch on the line A A of Fig. Fig. 2, is a half plan looking upward at the bottom of the switch, with the tank removed. Fig. 3, is a. vertical longitudinal section through the switch onthe line B B of Fig. 1. i I

The switch consists essentially of a metal casing a, this casing having two sides, a back and a top, the casing supporting and inclosing mostof the working elements (it the switch. A front cover I; and an oil tank 0 are atteched to the casing a. A fuse base a is also contained within the casing a.

in Fig. l the switch in the off position as well as in the starting and in the running position.

The cranks c and f are pivoted in one side of the casing 1, these two cranks together is'shown a compositoriew of" Specification of Letters Patent.

Patented June 24,19 13.

Application filed January 2, 1913. Serial No. 739,869.

with two other cranks 9 shown in Fig. 3 supporting theinovable wooden blocks h and j. The movable contactsk are attached to the wooden blocks h and- The stationary contacts Z are attached'to the springs in which are rigidly attached tothe wooden block n, which in turn is rigidly supported by the casing a. tion the springs m are shown relaxed whereas in practice the movable contacts is will. project outsufliciently far so thatwlten the contacts is and Z are toucl'ii-ng, there will. be

To simplify the illustra:

enough tension to keep the electric-circuits lightly closed. The two toggle links 0 are movably pivoted, each link at one .end .on studs projecting from the upper ends of the cranks e and f, the other ends being jointly pivoted niovably on a stud projecting from the connecting rod p. The rod phas a stud projecting from. its lower end engaging a Vertical slot in the casing a and at'itslup'per end engages a. projecting stud on the crank 1'. A spiral spring q-i-ittached-at'one end-to the connecting to p and atits other end directly into the running position without first having been brought to the starting .po-

to the lower edge of the casing aserves'to open-the switch when the operating lever t released.

- The crank 1' is fixed to one end of a shaft which is rotatable in a bearing in the easing a. To. the other end of the shafts is fixed the operating lever t, by nieans' of which the. mechanism of the switch is operated. stud a: atits free end, swings on apin '1), projecting from the operating lever it. Two

fiat springs 11, each fixed at one of its ends to the hub of the operating lever Qenga'ge at their free ends with a tongue projecting troin the latch and maintain the latch in the. normal positions shown in Fig. 1, and when the switch is being thrown from the off position to the starting position and thence to the running posit-ion, these springs serve to bring the latch back to the normal positions ShO WIl.- The two ledges y and zproiect from the outer side of: the casing a, the ledge y being so sit-uated that it engages the stud so, so that the switch can. not he immediately thrown from the off position to the running position. The ledge z is so situated that the pin a? willslide over thenpper side of the ledge allowing the. switch to be thrown intothe starting position and then allowing the stud a: to. slide along the under A latch 11, having a projecting lockingthe switch in the-"running positionz By releasing the latch, either by hand or by. an automatic device, the switch may be thrown to the'off position.

In Fig. 1, the letters t, t, and'fi, indicate respectively the running, off, ,a'ndstarti-ng positions of the operating"leyer,- the corre sponding positions ofthe "other elements positions of the operating lever;

being readily traceable "from the different The electric circuits are arranged as follows: The upper fuse clips on the base at are connected to the lines from the generating source and by flexible leads to the movable contacts attached to the wooden block is. The lower fuse clips on the base (i are connected by flexible leads to the movable contacts attached to the wooden'block 7'. The stationary contacts lattached to the springs m are connected by suitable leads to the motor or other apparatus which is to be cont-r alled.

What I claim and desire to secure by Letters Patent is as follows 1. In an electric switch, 7 a supporting casing, common to moving and stationary parts, a set of centrally situated spring supported stationary contacts mounted on'an insulating support, two sets of movable contacts attached to movably'pivoted insulating blocks, situated one on either side of said stationary contacts; means to cause said a movable contacts to travelradially around their supportingpivots, so as to engage the stationary contacts.

said movable contacts one at a time with 2. In an electric switch, a supporting I casing common to moving and stationary parts, a set of centrally situated spring supported stationary contacts, two sets of radi-.

ally movable cont-acts situated one on either side of said stationary contacts, the pivoted.

stud on said connecting rod, a spiral teni sion spring attached at one of its ends to said supporting casing and at its other end to said connecting-rod, a radially movable shaft supported crank to actuate said connecting rod, means to cause said crank to turn in either direction. 7

3. In an electric switch a supporting casing, a radially movable operating lever shaft supported on outside of "said supporting casing, a radially movable latch pivoted to said operating lever, two curved ledges projecting from outside of said supporting easing, a stud projecting from said movable latch to engage said curved. ledges, two fiat springs fixed rigidly each at one end to hub-of said controlling lever and at their free ends engaging with a tongue on said movable latch, the curved ledges and mov able latch to control travel of said control= ling lever.

ERNEST H. RIEKEN.

Witnesses:

E. C. Pn'rnno, Las'rau Tnour. 

